This are extensions!! Jon 25 Fred The other Fred. Hello Jon No Harry? Hey Calahan... Hello Fred Hello Fred#2 Hello Jon, 25 years Hello Henry, 27 years Salut Amed, 24 ans Jon: /25/25 Henry: /27/ Amed: 24/24/24 Jon: /25/25 Henry: /27/ Amed: 24/24/24 (1) person: {"name":"Jon","age":25} (2) name: Jon (2) age: 25 (1) person.name: Fred (1) person.name=Fred: The other Fred. (1) persons: [{"name":"Jon","age":25,"lang":"en"},{"name":"Henry","age":27,"lang":"en"},{"name":"Amed","age":24,"lang":"fr"}] (1) fellows: {"Jon":{"age":25,"lang":"en"},"Henry":{"age":27,"lang":"en"},"Amed":{"age":24,"lang":"fr"}} (2) Jon: {"age":25,"lang":"en"} (3) age: 25 (3) lang: en (2) Henry: {"age":27,"lang":"en"} (3) age: 27 (3) lang: en (2) Amed: {"age":24,"lang":"fr"} (3) age: 24 (3) lang: fr